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Press moulding process for UHP reflectors

Publishing Venue

The IP.com Prior Art Database

Abstract

ID613021

Country

Belgium

Language

English (United States)

This text was extracted from a Microsoft Word document.

This is
100% of the total text.

ID613021

To
avoid loss of light in a lamp-reflector unit it is important that the opening
in the neck of the reflector through which the burner extends into the
reflector, is kept as small as possible. Such light losses occur when light
from the burner falls into said opening. At present said opening is made after
the reflector has been molded. Thereto, in known processes the opening is made
via drilling or via a “hot-punch”. Drilling involves the disadvantage of an
extra washing step, while “hot-punching” has the disadvantage that it is not
possible for glass-ceramic reflectors. To counteract these disadvantages, it is
proposed to use a movable “Mold-pen” which counteracts the presence of glass
(glass-ceramic) during the press-molding process at the location of the neck
opening to be formed. The pen is present in the mold when the material to be
molded is brought into the mold, but is subsequently forced out of the mold by
the plunger during the shaping of the reflector. Thus the disadvantages of the
known processes are circumvented and a reflector with a relatively small
opening can be relatively easily manufactured.